ATGM331C-5T series modules are 17X22.4 sized high performance BDS/GNSS positioning and timing module series. This series of module products is based on the fourth generation low power GNSS SOC single chip-AT6558, supporting multiple satellite navigation systems including China's BDS (Beidou Satellite Navigation System), USA's GPS, Russia's GLONASS, the European Union's GALILEO, Japan's QZSS and satellite augmentation systems SBAS (WAAS, EGNOS, GAGAN, MSAS). The AT6558 is a truly six-in-one multi-mode satellite navigation positioning chip that includes 32 tracking channels and can simultaneously receive GNSS signals from six satellite navigation systems, and realize joint positioning, navigation and timing. ATGM331C-5T series modules have the advantages of high sensitivity, low power consumption, and low cost, and are suitable for various timing devices, clock servers, and time keeping devices. It can be directly replaced with Ublox LEA T series modules.